Ok guys I did search and I just cant find my answer to my question

I installed some different gauges a few weeks ago

https://www.evolutionm.net/forums/sh...stewart+warner

My problem is that my new SW is reading 3 to 4 psi lower than my AM was.

So I hook up my cable and go for a drive. Here is what I am getting.

I am looking at the MAP senser on the log and it is showing in a 3rd gear pull at what was 23 psi on the AM and now only 19 on the SW gauge... 329.498 KPa... WTF

When I convert this it was something like 48psi, and we know that aint right

Next up I checked the Barometer but it was staying around 100 KPa, so I know that aint it either.

So what gives here am I looking at the wrong things, do I need to divide something somewhere, any ideas would be GREATLY appericated

I gotta get this figured out by this weekend, track day is the 7th (monday).

 

You're looking at the stock MAP sensor values? Or are you using the JDM IX map sensor? My JDM IX Map is 100% accurate and matching my Stewart Warner Gauge.

My AutoMeter was off by 3-4 PSI.

 

Yes it is the stock MAP, is there a difference between the 2

 

https://www.evolutionm.net/forums/sh...52#post4074452

Read that post

I believe the stock MAP only reads up to 0psi or 1-2psi.. something like that.

The JDM IX Map sensor is a 3 Bar Map. Should be 100% accurate..

 

Thanks Ralph

Bump so any more ideas

 

not all boost gauges are created equal. I am assuming these are both mechanical gauges right?

 

yeah, they are machanical.

I understand not all are equal but da*m 4 psi